code: def forward(self, x: torch.Tensor, a: A) -> torch.Tensor:
      return a(x)
  
file_path: pytorch/test/fx/test_future.py
imports: from __future__ import annotations
  import torch
  import typing
  from torch.fx import symbolic_trace
label_desc: Use image node_id 1 for calling the M2 obj's underlying member method code with example usage: obj.forward(x, a) and returns: a